I decided to give the needle punching thing another try, but I didn't have time to drive all the way out to the store that sells the stuff for another pattern. So, I came up with my own. This:
I traced it on a piece of plain cotton, bought some floss in various shades of green and earthy tones and went to work. I don't think I quite have the hang of this yet, so the loops aren't uniform, but I kind of like the variation in texture. Maybe that's just an excuse to be sloppy with the whole thing and not actually master the technique. We'll see. Here is the finished product.